Just replace door speakers?
 

Anyone know of a decent drop in upgrade for just the door speaker? Or at least some specs I can go off to source a decent speaker?

I plan to install an Alpine KTP-445U power pack and run it bridged to the fronts. I will probably do some sound deadening and ensolite foam on the doors. I don't want to go nuts but I'll probably end up sealing the doors up completely and going nuts with the foam till the doors and door panels are solid. I just need to figure out a good replacement speaker. I'm actually okay with the front stage, the midbass sucks hard though.